North Creek and Floodplain Ecosystem Restoration:

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Other Title
  • ノースクリーク川と氾濫原の復元:ミティゲーションを超えた湿地生態系の復元事業について
  • 事例研究 ノースクリーク川と氾濫原の復元:ミティゲーションを超えた湿地生態系の復元事業について
  • ジレイ ケンキュウ ノースクリークガワ ト ハンラン ゲン ノ フクゲン ミティゲーション オ コエタ シッチ セイタイケイ ノ フクゲン ジギョウ ニ ツイテ
  • ミティゲーションを超えた湿地生態系の復元事業について

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Abstract

This report introduced the restoration project in the City of Bothell, Washington State, U. S. The construction of the new university campus in Bothell required mitigation. The Washington State Government, the proponent of the project, determined to restore the entire wetland ecosystem, which went beyond the mitigation. The hydrogeomorphic (HGM) approach to assessing wetland functions was applied to the project and the reference site was identified to define the wetland functions. The impact assessment, restoration design, monitoring protocol and contingency measures were developed based on the wetland functions. The restoration design was developed based on the wetland functions, and the new channel system design, placement of woody debris, and planting plan were determined. Construction was composed of grading, planting, and weed control. Maintenance and monitoring program based on the restoration design were undertaken after the construction. The University of Washington is responsible for the management of the restoration site after the construction. They developed guidelines to manage the site and utilize it for education, research, and nature study.

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